:root{--page: #f5f7fb;--ink: #172033;--muted: #5c6679;--link: #174ea6;--chrome: #c0c0c0;--light: #fff;--mid: #808080;--content: 780px}*{box-sizing:border-box}html{color-scheme:light;scroll-behavior:smooth}body{margin:0;background:var(--page);color:var(--ink);font-family:Arial,Helvetica,sans-serif;line-height:1.65}button,input{font:inherit}button{color:inherit}a{color:var(--link)}a:hover{text-decoration-thickness:2px}.skip-link{position:fixed;z-index:1000;top:8px;left:8px;padding:8px 12px;transform:translateY(-150%);border-radius:4px;background:#fff;color:#000;font-weight:700}.skip-link:focus{transform:none}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.site-header{min-height:54px;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:0 24px;background:#fff;border-bottom:1px solid #dce1ea}.brand{display:inline-flex;align-items:center;gap:7px;color:#121a2b;font-size:18px;font-weight:700;text-decoration:none}.brand-mine{color:#536074;font-size:20px}.play-link{color:#27334a;font-size:14px;font-weight:700;text-underline-offset:3px}.table-scroll{overflow-x:auto}table{width:100%;border-collapse:collapse;margin:13px 0 17px}th,td{padding:9px 12px;border:1px solid #d8dde7;text-align:left}thead{background:#edf2fb}.site-footer{padding:30px 20px 34px;border-top:1px solid #dce1ea;background:#fff;color:#5b6474;text-align:center;font-size:13px}.site-footer p{margin:0 0 12px}.site-footer nav{display:flex;justify-content:center;flex-wrap:wrap;gap:8px 20px;margin-bottom:12px}.site-footer a{color:#33405a}.site-footer .cookie-settings{padding:0;border:0;background:none;color:#33405a;font:inherit;text-decoration:underline;cursor:pointer}@media(max-width:600px){.site-header{min-height:48px;padding:0 14px}.play-link{font-size:13px}}[hidden]{display:none!important}:where(a,button,select,summary):focus-visible{outline:3px solid #2466c2;outline-offset:3px}select{font:inherit;color:inherit}.header-nav{display:flex;align-items:center;gap:24px;font-size:14px;font-weight:700}.header-nav a{color:#27334a;text-underline-offset:4px;padding:10px 0}.eyebrow{display:block;color:#376085;font-size:11px;font-weight:700;letter-spacing:.13em;text-transform:uppercase}.primary-button{display:inline-flex;justify-content:center;align-items:center;min-height:44px;padding:10px 16px;border:1px solid #174ea6;border-radius:8px;background:#174ea6;color:#fff;font:700 13px/1.5 Arial,sans-serif;text-decoration:none;cursor:pointer}.primary-button:hover{background:#103e88;color:#fff}@media(max-width:600px){.header-nav{gap:18px;font-size:13px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}@media(max-width:600px){.site-header{gap:8px;padding-inline:12px}.header-nav{gap:12px;font-size:12px}.brand{font-size:16px;gap:5px}}@media(max-width:360px){.site-header{padding-inline:9px}.brand{font-size:14px}.brand-mine{font-size:17px}.header-nav{gap:10px;font-size:11px}.play-link{font-size:11px}}.variant-links{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.variant-link{--variant-accent: #25654e;display:flex;align-items:center;gap:14px;position:relative;border:1px solid #d8e0e7;background:#fff;border-radius:10px;padding:20px 16px;text-decoration:none;color:#202d41;transition:border-color .15s,box-shadow .15s}.variant-link:hover{border-color:var(--variant-accent);box-shadow:0 4px 16px #2433450c}.variant-emblem{display:grid;place-items:center;flex:none;width:42px;height:42px;font-size:23px;font-weight:700;color:var(--variant-accent);background:#f0f4f4;border-radius:10px}.variant-link strong{display:block;font-size:15px;margin-bottom:3px;line-height:1.3}.variant-link span span{display:block;font-size:11px;color:#657184;line-height:1.5}.variant-link>span:last-child{color:#8793a1;font-size:17px;margin-left:auto}.home-variants{max-width:var(--content);margin:36px auto 0}.home-variants h2{font-size:22px}.home-variants .variant-links{grid-template-columns:repeat(2,1fr)}@media(max-width:800px){.variant-links{grid-template-columns:1fr}.variant-link{padding:16px}.home-variants .variant-links{grid-template-columns:1fr}}.variant-page{--accent: #25654e;max-width:1180px;margin:0 auto;padding:28px 28px 64px}.variant-play-page{padding-top:16px}.variant-game-header{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:12px}.variant-title{display:flex;align-items:center;gap:10px;margin:0;font-size:28px;line-height:1.2;letter-spacing:-.8px}.variant-title-emblem{display:grid;place-items:center;flex:none;width:34px;height:34px;border:1px solid #d8e0e7;border-radius:9px;background:#fff;color:var(--accent);font-size:19px;letter-spacing:-.5px}.variant-heading{display:flex;justify-content:space-between;align-items:center;gap:28px;margin:0 0 24px}.variant-heading .eyebrow{color:var(--accent)}.variant-heading h1{font-size:clamp(30px,4vw,44px);letter-spacing:-1.5px;line-height:1.15;margin:8px 0 13px}.variant-heading p{max-width:650px;font-size:16px;color:#596478;line-height:1.6;margin:0}.hero-emblem{flex:none;display:grid;place-items:center;width:116px;height:116px;background:#e8eee8;color:var(--accent);border-radius:28px;font-size:58px;font-weight:700;transform:rotate(-6deg);border:1px solid #d6ded7}.mode-nav{display:flex;gap:4px;margin-bottom:0;overflow-x:auto;padding-bottom:2px}.mode-nav a{padding:7px 18px;white-space:nowrap;text-decoration:none;font-size:13px;font-weight:700;color:#5a6576;border:1px solid transparent;border-radius:7px}.mode-nav a[aria-current]{color:var(--accent);background:#fff;border-color:#d4dce1;box-shadow:0 1px 2px #18203008}.variant-game{border:1px solid #d5dde3;background:#fff;border-radius:14px;overflow:hidden;box-shadow:0 5px 26px #20304806;scroll-margin-top:12px}.variant-game button,.variant-game select,.neighbor-demo select{min-height:40px;border:1px solid #c7d1d8;border-radius:6px;background:#fff;padding:7px 12px;font-size:13px;font-weight:600;cursor:pointer}.variant-game button:hover:not(:disabled){background:#f0f4f7;border-color:#8294a3}.variant-game button:disabled{cursor:wait;opacity:.55}.variant-game .v-primary{background:var(--accent);border-color:var(--accent);color:#fff}.variant-game .v-primary:hover:not(:disabled){background:var(--accent);filter:brightness(.92)}.v-toolbar{display:flex;align-items:center;gap:12px;padding:10px 18px;border-bottom:1px solid #e3e8ed}.v-settings{position:relative;flex:none}.v-difficulty{display:flex;align-items:center;gap:8px;color:#5c6679;font-size:12px}.v-difficulty select{max-width:190px}.v-toolbar #v-new{display:inline-flex;align-items:center;justify-content:center;gap:7px;flex:none}.v-toolbar-icon{flex:none}.v-toolbar .v-icon-button{display:none}.v-input-modes{display:flex;flex:none;gap:3px;padding:3px;border-radius:7px;background:#edf1f4}.v-input-modes button{border-color:transparent;min-height:34px;padding:5px 10px;background:transparent}.v-input-modes [aria-pressed=true]{background:#fff;color:var(--accent);box-shadow:0 1px 4px #20304820;border-color:#d7dfe4}.v-stats{display:flex;align-items:center;gap:22px;margin-left:auto;padding-left:20px;border-left:1px solid #e0e6eb}.v-stat-label{display:block;font-size:9px;line-height:1.5;text-transform:uppercase;letter-spacing:.05em;white-space:nowrap;color:#68778b}.v-stat-value{display:flex;align-items:center;gap:4px}.v-stat-value .v-toolbar-icon{display:none}.v-stats strong{display:block;font-size:20px;line-height:1.2;font-variant-numeric:tabular-nums;letter-spacing:-.4px;white-space:nowrap}.v-stats>div:first-child strong{min-width:3ch}.v-stats>div:nth-child(2) strong{min-width:2ch}.v-stats>div:last-child strong{min-width:4ch}.v-feedback{flex:1;min-width:0;min-height:40px;display:flex;flex-direction:column;justify-content:center}.v-status{font-size:12px;color:#4e5b6b;line-height:1.6}.v-status:empty{display:none}.v-status:not(:empty)+#v-inspect{display:none}.v-status[data-state=won]{color:#1d653e;font-weight:600}.v-status[data-state=lost]{color:#912e28;font-weight:600}.v-confirm,.v-notice{padding:14px 24px;background:#fff6e7;border-block:1px solid #ead7b3}.v-confirm p{margin:0 0 8px}.v-confirm button+button{margin-left:8px}.v-play-space{padding:18px 24px 24px;background:#f0f3f6;border-block:1px solid #e2e7ec;min-height:340px}.v-board-panel{min-width:0}.v-board-scroll{overflow:auto;max-width:100%;padding:10px 4px 14px;overscroll-behavior-x:contain}.v-board-scroll:focus-visible{outline-offset:-3px}#v-board{display:flex;justify-content:center;gap:16px;width:max-content;min-width:100%;align-items:start}.v-slice{flex:none}.v-slice-label{font-size:11px;color:#667181;margin:0 0 6px;display:flex;justify-content:space-between;gap:6px}.v-slice-label b{color:var(--accent)}.v-grid{--cell: 36px;display:grid;grid-template-columns:repeat(var(--columns),var(--cell));gap:3px;padding:6px;background:#d7e0e5;border:1px solid #c7d2d9;border-radius:7px;width:max-content}.variant-game .v-cell{display:grid;place-items:center;width:var(--cell);height:var(--cell);min-height:0;border-radius:4px;padding:0;border:1px solid #b5c4ce;background:linear-gradient(#fff,#edf2f5);box-shadow:0 2px #bac7d0;font-size:16px;font-weight:700;line-height:1;font-variant-numeric:tabular-nums;touch-action:manipulation;position:relative}.variant-game .v-cell:hover{border-color:var(--accent);background:#fff}.variant-game .v-cell.is-open{background:#e8edf0;border-color:transparent;box-shadow:none}.variant-game .v-cell.is-flag{color:#a3412a;background:#fff7ec}.variant-game .v-cell.is-mine{background:#f6d5d0;color:#982f2a;border-color:#e5bab4;box-shadow:none}.variant-game .v-cell.is-hit{background:#b83232;color:#fff}.v-cell[data-clue="1"]{color:#2463ae}.v-cell[data-clue="2"]{color:#28613b}.v-cell[data-clue="3"]{color:#b03c31}.v-cell[data-clue="4"]{color:#7348a5}.v-cell[data-clue="5"]{color:#974129}.v-cell[data-clue="6"]{color:#146772}.v-cell.is-neighbor{outline:2px solid #c09538;outline-offset:-2px}.v-cell.is-selected{outline:2px solid var(--accent);outline-offset:1px;z-index:1}.v-cell.hint-source{outline:3px solid #554992;outline-offset:-2px}.v-cell.hint-safe{background:#ccebd8!important;outline:2px solid #278149;outline-offset:-2px}.v-cell.hint-mine{background:#ffe2ba!important;outline:2px solid #ac631e;outline-offset:-2px}.v-game-bottom{padding:13px 24px;display:flex;gap:16px;justify-content:space-between;align-items:center}.v-game-bottom p{font-size:12px;color:#586578;margin:0;min-height:20px}.v-game-bottom button{flex:none}.v-hint-panel{margin:0 24px 16px;padding:18px;border-radius:9px;background:#eef7f1;border:1px solid #c3ddcb;font-size:14px}.v-hint-panel p{margin:6px 0 12px}.v-hint-panel button+button{margin-left:8px}.v-board-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 24px;border-top:1px solid #e5e9ee;font-size:11px;color:#657185}.v-board-meta strong{color:#3c4c60;margin-left:5px;font-variant-numeric:tabular-nums}.v-board-meta #v-share{min-height:36px;padding:5px 10px;font-size:11px}.v-save-line{display:flex;gap:12px;justify-content:space-between;padding:12px 24px;font-size:11px;color:#697688;border-top:1px solid #e5e9ee}.v-save-line a{color:var(--accent);white-space:nowrap}.v-layer-controls{display:flex;align-items:center;justify-content:center;gap:8px;margin-bottom:12px}.v-layer-controls label{font-size:12px;display:flex;align-items:center;gap:6px}.v-layer-controls select{padding:6px 10px}.v-layer-controls button{width:36px;min-height:36px;padding:4px}.has-volume{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}.volume-panel{min-width:0}.panel-caption{display:flex;justify-content:space-between;font-size:10px;letter-spacing:.1em;color:#687486}.panel-caption span+span{letter-spacing:0}.volume-panel canvas{display:block;width:100%;height:310px;touch-action:none;cursor:grab}.volume-panel canvas:active{cursor:grabbing}.volume-buttons{display:flex;justify-content:center;gap:6px}.volume-panel .v-small{text-align:center;margin-bottom:0}.v-small{font-size:12px;color:#657185;line-height:1.6}.atlas-caption{margin:10px 0 6px;font-size:10px;letter-spacing:.08em;color:#6b7586;display:flex;justify-content:center;gap:16px}#v-slice-map{display:flex;flex-wrap:wrap;max-width:240px;gap:4px;justify-content:center;margin:0 auto 14px}#v-slice-map button{min-height:28px;padding:2px 5px;font-size:10px;flex-basis:calc(100% / var(--z) - 4px)}#v-slice-map [aria-pressed=true]{background:var(--accent);color:#fff;border-color:var(--accent)}.variant-4d #v-board{display:grid;grid-template-columns:repeat(var(--z),max-content);gap:16px}.variant-4d .v-grid{--cell: 30px;gap:2px;padding:4px}.variant-4d .v-cell{font-size:14px}.variant-guide{margin:48px 0}.guide-intro{max-width:680px}.variant-guide h2,.variant-more h2{font-size:27px;letter-spacing:-.65px;line-height:1.3;margin:8px 0 14px}.guide-intro p,.variant-guide>p{color:#576377;font-size:15px}.rule-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin:28px 0 32px}.rule-cards article{padding:22px;background:#fff;border:1px solid #dce3e9;border-radius:10px}.rule-number{color:var(--accent);font-size:12px;font-weight:700}.rule-cards h3{font-size:17px;line-height:1.35;margin:12px 0}.rule-cards p{font-size:13px;color:#5a677a;margin:0}.variant-controls{margin:30px 0;border-block:1px solid #dbe2e9;padding:8px 0 20px}.variant-controls h3{font-size:18px}.variant-controls dl{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin:0}.variant-controls dt{font-size:13px;font-weight:700;margin-bottom:6px}.variant-controls dd{margin:0;font-size:13px;color:#5a6678}.neighbor-demo{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;background:#eaeef4;border:1px solid #d7dee7;border-radius:12px;padding:26px}.neighbor-demo h3{margin:7px 0;font-size:22px;letter-spacing:-.4px}.neighbor-demo p{font-size:13px;color:#566477}.neighbor-demo label{font-size:12px;display:flex;align-items:center;gap:10px}.neighbor-demo .demo-count{color:var(--accent);font-size:20px;font-weight:700;margin:14px 0 0}.demo-slices{display:grid;grid-template-columns:repeat(var(--slices),max-content);gap:10px;justify-content:center}.demo-slice{display:grid;grid-template-columns:repeat(3,16px);gap:3px;padding:4px}.demo-square{width:16px;height:16px;background:#c7d1db;border-radius:3px}.demo-square.active{background:#c19a45}.demo-square.center{background:var(--accent)}.demo-square.absent{opacity:.18}.variant-more{padding-top:6px}.variant-more>p{font-size:13px;color:#5b697e;margin-top:22px}.infinite-tools{display:flex;align-items:center;gap:8px;padding:10px 24px;background:#f0f3f6;flex-wrap:wrap}.infinite-tools span{font-size:11px;margin-left:auto;color:#5c697b}.infinite-tools output{font-size:12px;min-width:36px;text-align:center}.infinite-canvas{display:block;width:100%;height:480px;touch-action:none;background:#e0e7eb;cursor:crosshair;outline-offset:-4px!important}.infinite-access{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:20px 24px;border-top:1px solid #dce3e9}.infinite-access h2{font-size:15px;margin:0}.infinite-access p{margin:3px 0 10px;font-size:12px;color:#5f6d7e}#v-coordinate{font-variant-numeric:tabular-nums}#v-jump{display:flex;gap:8px;align-items:end}#v-jump label{display:grid;gap:2px;font-size:11px;color:#5a6879}#v-jump input{width:95px;min-height:38px;border:1px solid #bdcbd5;border-radius:5px;padding:5px 8px;font-size:13px}.v-neighborhood{display:grid;grid-template-columns:repeat(3,40px);gap:3px}.v-neighborhood button{height:40px;padding:0}.v-neighborhood button.is-open{background:#edf1f4;border-color:#dfe5e9}.v-neighborhood button.is-selected{outline:2px solid var(--accent)}.variant-hub{--accent: #285783}.variant-hub .variant-heading{margin:24px 0 36px}.variant-hub .variant-links{grid-template-columns:repeat(2,1fr)}.variant-hub .variant-link{min-height:150px;padding:24px}.variant-hub .variant-link strong{font-size:22px}.variant-hub .variant-emblem{width:65px;height:65px;font-size:30px}.variant-hub .variant-guide{max-width:860px}.v-retry{margin-left:12px}@media(max-width:900px){.rule-cards{gap:12px}.rule-cards article{padding:18px}.has-volume{gap:12px}.v-grid{--cell: 32px}.variant-4d #v-board{gap:12px}.neighbor-demo{gap:20px}.demo-slice{grid-template-columns:repeat(3,13px)}.demo-square{width:13px;height:13px}}@media(max-width:800px){.variant-game-header{flex-direction:column;align-items:stretch;gap:8px}}@media(max-width:650px){.variant-page{padding:22px 12px 40px}.variant-play-page{padding-top:12px}.variant-title{font-size:24px}.variant-title-emblem{width:30px;height:30px;font-size:17px}.variant-heading{gap:12px;margin-bottom:22px}.hero-emblem{width:65px;height:65px;font-size:31px;border-radius:17px}.variant-heading h1{font-size:29px;letter-spacing:-1px}.variant-heading p{font-size:14px}.variant-heading .eyebrow{font-size:9px;letter-spacing:.08em}.mode-nav{gap:0}.mode-nav a{padding:7px 12px;font-size:12px}.v-board-meta{padding:8px 12px}.v-play-space{padding:14px 8px 18px;min-height:340px}.v-grid{--cell: 32px;gap:2px;padding:4px}.v-game-bottom{padding:12px;gap:8px;align-items:start}.v-game-bottom p{font-size:11px}.v-game-bottom button{font-size:11px;padding:7px 9px}.v-save-line{padding:12px;align-items:start;font-size:10px}.v-save-line span{max-width:60%}.v-hint-panel{margin:0 12px 12px;padding:14px;font-size:13px}.has-volume{grid-template-columns:1fr}.volume-panel canvas{height:225px}.volume-panel .v-small{font-size:10px;max-width:300px;margin:8px auto 0}.panel-caption{padding:0 8px}.volume-buttons button{font-size:11px;min-height:32px}.variant-4d #v-board{display:block;min-width:100%;width:max-content}.variant-4d .v-slice:not(.active-slice){display:none}.variant-4d .v-slice{width:max-content;margin:auto}.variant-4d .v-grid{--cell: 44px;gap:3px;padding:6px}.variant-4d .v-cell{font-size:17px}.v-layer-controls{gap:5px}.v-layer-controls label{font-size:11px}.variant-guide{margin:34px 4px}.variant-guide h2,.variant-more h2{font-size:24px}.rule-cards{grid-template-columns:1fr;gap:12px;margin:22px 0}.rule-cards article{padding:19px}.rule-cards h3{margin:6px 0 9px}.variant-controls dl{grid-template-columns:1fr;gap:16px}.neighbor-demo{grid-template-columns:1fr;padding:20px}.demo-slices{gap:8px}.demo-slice{grid-template-columns:repeat(3,16px)}.demo-square{width:16px;height:16px}.variant-more{padding:0 4px}.infinite-canvas{height:390px}.infinite-tools{padding:10px;gap:5px}.infinite-tools button{font-size:11px;padding:6px 8px;min-height:34px}.infinite-tools span{width:100%;margin:2px 0 0}.infinite-access{padding:16px 12px;gap:10px;flex-wrap:wrap}.infinite-access>div:first-child{flex:1;min-width:150px}.infinite-access .v-small{max-width:225px}#v-jump input{width:65px}.v-neighborhood{grid-template-columns:repeat(3,36px)}.v-neighborhood button{height:36px;min-height:36px}.variant-hub .variant-links{grid-template-columns:1fr}.variant-hub .variant-link{min-height:115px;padding:18px}.variant-hub .variant-link strong{font-size:19px}.variant-hub .hero-emblem{display:none}}@media(max-width:360px){.variant-heading h1{font-size:26px}.hero-emblem{width:50px;height:50px;font-size:25px}.v-grid{--cell: 28px}.mode-nav a{padding:7px 10px}.v-neighborhood{grid-template-columns:repeat(3,34px)}.variant-4d .v-grid{--cell: 42px}}@media(max-width:1000px){.v-toolbar{gap:8px;padding:10px 12px}.v-toolbar .v-icon-button{display:inline-grid;place-items:center;width:40px;height:40px;padding:0;flex:none}.v-toolbar #v-new{width:40px;height:40px;padding:0}.v-toolbar #v-new span,.v-input-modes{display:none}.v-toolbar #v-mode-toggle[aria-pressed=true]{background:var(--accent);border-color:var(--accent);color:#fff;box-shadow:inset 0 0 0 1px #ffffff38}.v-settings-panel{display:none;position:absolute;top:calc(100% + 8px);left:0;z-index:10;width:256px;max-width:calc(100vw - 52px);padding:16px;background:#fff;border:1px solid #cbd6e0;border-radius:9px;box-shadow:0 8px 24px #23354926}.v-settings-panel.is-open{display:block}.v-difficulty{flex-direction:column;align-items:stretch;gap:8px;font-size:12px}.v-difficulty select{width:100%;max-width:none}}@media(max-width:650px){.v-toolbar{padding:8px;gap:6px}.v-stats{gap:12px;padding-left:10px}.v-stat-label{display:none}.v-stat-value .v-toolbar-icon{display:block;width:14px;height:14px;color:#6b7b8e}.v-stat-value{gap:4px}.v-stats strong{font-size:15px;line-height:1.5;letter-spacing:-.3px}}@media(max-width:360px){.v-toolbar{gap:4px;padding-inline:6px}.v-stats{gap:7px;padding-left:7px}.v-stat-value{gap:3px}.v-stat-value .v-toolbar-icon{width:12px;height:12px}.v-stats strong{font-size:13px}}